Malicious PDF — malware analysis report

Static analysis result for SHA-256 5baabef6564db4bd…

MALICIOUS

PDF

92.8 KB Created: 2021-03-13 16:36:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: e72b087500f7fc2bcf5f8ba11dc523a5 SHA-1: d8aaba2f829d8f17e8e2e991e36a6d1f53afe879 SHA-256: 5baabef6564db4bd10a276406a81ef7be767f87cf06391b372d66cb01b9dcf1b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a heuristic firing indicating a large number of external links, suggesting a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier strongly indicate maliciousness, likely related to phishing or malware distribution. While no scripts were directly extracted, the PDF structure and numerous external URLs point towards an attempt to lure users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://seumenha.ru/award?keyword=sinergia+definicion+pdf PDF link annotation
    • http://puwexakibo.iblogger.org/eclipse_32_bit_for_selenium.pdfIn PDF document text
    • http://sujabupinoda.scienceontheweb.net/73088019652.pdfIn PDF document text
    • https://supavutoni.weebly.com/uploads/1/3/4/7/134713891/lupepazurig-fanavig-tunawu.pdfIn PDF document text
    • https://cdn.sqhk.co/libarazituw/ijihjbb/94510279189.pdfIn PDF document text
    • http://malemukinupogeb.22web.org/geregijudojexajofegop.pdfIn PDF document text
    • http://joritirumag.mypressonline.com/kutekerafal.pdfIn PDF document text
    • http://sapofogagesari.iblogger.org/accenture_insights_platform_architecture.pdfIn PDF document text
    • http://dukafufuxona.iblogger.org/vuparasukikisa.pdfIn PDF document text
    • http://gubixazolela.sportsontheweb.net/why_is_my_gas_stove_beeping.pdfIn PDF document text
    • https://cdn.sqhk.co/lodikorep/lghiahf/hockey_app_is_offered_by.pdfIn PDF document text
    • http://rawiduti.medianewsonline.com/easy_keto_recipes.pdfIn PDF document text
    • https://binenivav.weebly.com/uploads/1/3/4/5/134516867/lajumewikenebenu.pdfIn PDF document text
    • https://cdn.sqhk.co/tawavumazo/WiiMifU/vunoluwifolux.pdfIn PDF document text
    • https://sovuzozasofebod.weebly.com/uploads/1/3/4/3/134343281/4140996.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/kaththi_movie_tamilrockers._net.pdfIn PDF document text
    • https://s3.amazonaws.com/gedesisumi/best_way_to_travel_to_niagara_falls_from_new_york.pdfIn PDF document text
    • http://xedonufil.rf.gd/bhojpuri_mein_new_song.pdfIn PDF document text
    • https://s3.amazonaws.com/zalisujezajaje/behringer_eurorack_ub802_8-input_2-bus_mixer.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzakifezara/90865983899.pdfIn PDF document text
    • https://s3.amazonaws.com/nedijowewoded/pdf_bestand_verkleinen_adobe.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000125ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x125EA 5216 bytes
SHA-256: 65d8df333326c3da78a7d91dc74e9a7d34b5c2f3d238083204a9d4a4a8b443fd
font_01_sfnt_off000137b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x137B8 13940 bytes
SHA-256: fcb402b180713330850833eb2b9dfb989b2912ad6c478ef9f927be479fb5fc5c

Open this report in the interactive analyzer, or submit your own file for analysis.